Product Page

SIC6621JS

Features
 Built-in Integrated Power BJT
 Quasi-Resonant Primary Side Regulation (QR-PSR)
 Control with High Efficiency
 Built-in Compensation for Transformer Inductance

General Description

SIC6621JS is a high efficiency Primary Side Regulator and highly integrated PWM Power Switch for AC/DC
power supply applications. SIC6621JS operates in PFM mode at large load condition, with the load becomes
medium or light, the chip operates in Green mode to achieve high efficiency.

The SIC6621JS provides accurate constant voltage, constant current (CV/CC) regulation without requiring an
opto-coupler and the secondary control circuitry.It can achieve excellent regulation and high average efficiency.

Multi-mode operations of the SIC6621JS are utilized to achieve low standby power, high efficiency and audio & noise free.

SIC6621JS also offers rich protection features including Cycle-by-Cycle peak current limiting, UVLO, OTP,
load OVP, and VDD over voltage.

The SIC6621JS is available in SOP-7 package.

Features

 Built-in Integrated Power BJT
 Quasi-Resonant Primary Side Regulation (QR-PSR)
    Control with High Efficiency
 Built-in Compensation for Transformer Inductance
    Tolerances
 Adaptive Multi-mode PFM Control for Improving
    Efficiency
 Low stat-up current
 Built-in Leading Edge Blanking (LEB)
 Built-in Dynamic Base Drive
 Audio Noise Free Operation
 ±5% CC and CV Regulation
 Programmable Cable Drop Compensation (CDC)
    in CV Mode
 Built-in AC Line & Load CC Compensation
 Build in Protections:
 Short Load Protection (SLP)
 Cycle-by-Cycle Current Limiting (OCP)
 On-Chip Thermal Shutdown (OTP)
 VCC OVP & UVP & Clamp
Ship Worldwide

On your account or prepay

Payment Safe

100% Guarantee

Return Policy

30 Days Service

Solution & Support

Call +86-191 2935 1516